[求助] 采购订单报表中增加了2个字段 显示库存信息,但是无法读取出来数据 odoo
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[求组] 采购订单报表中增加了2个字段 显示库存信息,但是无法读取出来数据 odoo 
 class purchase_order_line(osv.osv):
 ................
 def _stock1(self, cr, uid, ids, field_name, arg, context=None):
 res = {}
 for order_line in self.browse(cr, uid, ids, context=context):
 res[order_line.id] = self.pool.get('stock.history').read_group(cr, uid, [
 ('product_id', '=', order_line.product_id.id)
 ], fields=['quantity'], groupby=['location_id'], context=context)
 return res
 _columns = {
 'name': fields.text('Description', required=True),
 'product_id': fields.many2one('product.product', 'Product', domain=[('purchase_ok','=',True)], change_default=True),
 ........
 'stock1': fields.function(_stock1, method=True, type='float', string='Stock1', help="This is Stock1"),
 'stock2': fields.function(_amount_line, string='Subtotal', digits_compute= dp.get_precision('Account')),
 }
 ==================
 stock1 这个仓库信息 显示不来数据,程序能编译通过
 最终想弄成这样子
 def _stock1(self, cr, uid, ids, field_name, arg, context=None):
 res = {}
 for order_line in self.browse(cr, uid, ids, context=context):
 res[order_line.id] = self.pool.get('stock.history').read_group(cr, uid, [
 ('product_id', '=', order_line.product_id.id),
 ('location_id', 'ilike', '物理库位 / JG / 库存')
 ], fields=['quantity'], groupby=['location_id'], context=context)